diff --git a/paimon-core/src/main/java/org/apache/paimon/mergetree/compact/NestTableMergeFunction.java b/paimon-core/src/main/java/org/apache/paimon/mergetree/compact/NestTableMergeFunction.java
index 9c674670901e2..db7da46268ab2 100644
--- a/paimon-core/src/main/java/org/apache/paimon/mergetree/compact/NestTableMergeFunction.java
+++ b/paimon-core/src/main/java/org/apache/paimon/mergetree/compact/NestTableMergeFunction.java
@@ -1,9 +1,11 @@
 package org.apache.paimon.mergetree.compact;
 
 import org.apache.paimon.KeyValue;
+import org.apache.paimon.data.BinaryArray;
 import org.apache.paimon.data.GenericArray;
 import org.apache.paimon.data.GenericRow;
 import org.apache.paimon.data.InternalRow;
+import org.apache.paimon.types.RowKind;
 import org.apache.paimon.types.RowType;
 
 import javax.annotation.Nullable;
@@ -12,21 +14,25 @@
 import java.util.List;
 import java.util.Map;
 
-public class NestTableMergeFunction implements MergeFunction<KeyValue>{
-    private Map<Integer,GenericArray> nestRowContainer;
-    private Map<Integer,RowType> nestTableRowType;
+public class NestTableMergeFunction implements MergeFunction<KeyValue> {
+    private Map<Integer, List<GenericArray>> nestRowContainer;
+    private Map<Integer, InternalRow.FieldGetter[]> nestTableFieldGetter;
 
     private InternalRow.FieldGetter[] getters;
     private InternalRow currentKey;
 
     private GenericRow mergedRow;
 
-    public NestTableMergeFunction(Map<Integer, RowType> nestTableRowType,InternalRow.FieldGetter[] getters) {
+    private KeyValue reused;
+
+    private Long latestSequenceNumber;
+
+    public NestTableMergeFunction(Map<Integer, InternalRow.FieldGetter[]> nestTableFieldGetter, InternalRow.FieldGetter[] getters) {
         this.nestRowContainer = new HashMap<>();
-        this.mergedRow =new GenericRow(getters.length);
+        this.mergedRow = new GenericRow(getters.length);
 
-        this.nestTableRowType = nestTableRowType;
-        this.getters =getters;
+        this.nestTableFieldGetter = nestTableFieldGetter;
+        this.getters = getters;
     }
 
     @Override
@@ -38,11 +44,31 @@ public void reset() {
     @Override
     public void add(KeyValue kv) {
         currentKey = kv.key();
+        InternalRow value = kv.value();
+        latestSequenceNumber = kv.sequenceNumber();
+        for (int i = 0; i < getters.length; i++) {
+            if (nestTableFieldGetter.containsKey(i)) {
+                GenericArray nestTable = (GenericArray)getters[i].getFieldOrNull(value);
+                if (nestTable!=null){
+//                    nestRowContainer.getOrDefault(i,new GenericArray())
+//                    InternalRow[] nestTableRows = (InternalRow[])nestTable.toObjectArray();
+                    nestRowContainer.getOrDefault(i,new ArrayList<>()).add(nestTable);
+                }
+            } else {
+                Object field = getters[i].getFieldOrNull(value);
+                if (field != null) {
+                    mergedRow.setField(i, field);
+                }
+            }
+        }
     }
 
     @Nullable
     @Override
     public KeyValue getResult() {
-        return null;
+        if (reused == null) {
+            reused = new KeyValue();
+        }
+        return reused.replace(currentKey, latestSequenceNumber, RowKind.INSERT, mergedRow);
     }
 }